Healthy people are often told during physical exams that they have intrahepatic bile duct stones, but in fact, what most people call “intrahepatic bile duct stones” may actually be foci of intrahepatic calcification that do not bother them. Intrahepatic calcified foci are strong echogenic clusters in the liver that appear like stones on ultrasound or CT images. They are usually single foci of calcification. They are more frequent in the right than in the left liver and are more common in the 20-50 age group. There are more cases of calcified foci in the human liver, which may be related to factors such as congenital development and disorders of calcium and phosphorus metabolism; they may also occur secondary to healed liver disease such as chronic inflammation, liver trauma, and abscesses. Simple calcified foci have no obvious symptoms, usually do not cause pain, do not cause significant harm to the body, and do not require treatment. Some ultrasound physicians in some hospitals tend to mistake the “strong echogenic clusters” of intrahepatic calcified foci under ultrasound for intrahepatic bile duct stones, causing patients to think they have intrahepatic bile duct stones. In fact, the real hepatic bile duct stones or what we commonly call intrahepatic bile duct stones are not common in the urban population, according to statistics, their incidence is generally higher in rural areas than in cities. “Most of the stones are distributed along the intrahepatic bile ducts, which is completely different from calcified foci. Therefore, after ultrasound finds “light mass” in the liver, to distinguish whether it is intrahepatic calcified foci or intrahepatic bile duct stones, an important basis is to see whether the distal bile ducts are dilated, and dilated bile ducts are most likely to form stagnant sediment-like stones. MRCP can clearly show the intrahepatic calcified foci that are difficult to identify by ultrasound, as well as the location, size, morphology and accompanying bile duct dilatation of intrahepatic bile duct stones and other lesions.